Oil-burning forge



C. C. HANSEN.

OIL BURNING FORGE. I APPLICATIONYHLED :uns 13. |921.

Patented May 9, 1922.v

//z lNvENToR Clim/ies Himself HIS ATTO Y Application aies .Tune *.13, 19a-1.

rI "he objects of the present invention are to improve in some respects upon the forgedescribed in saidl patent and enable the forge to be constructed with a renewable lin-ing composed of blocks of refractory material, most, of which are of standard construction instead `ot special blocks toy form the combustionv chamber, and to build the combustion chamber substantially` with standard blocks so that the cham-ber will have a comfo'rmation adapted to divide the flame vertically and cause the'tlame portions to travel in ascending spirals for heating the articles to be forged. By this means, as in forges of this type, the heat is evenly distributed throughout substantially the wholeA chamber and time is aiorded for substantially complete combustion of the fuel, thus adding greatly to the eiiiciency ofthe forge. v' l 'Although the forge disclosed in` this ap# plication is primarily designed for burning oil, the invention ycould be` adapted for use with substantially any kind of fuel which can. be projected' through a nozzle whether liquid or solid, and it is to be understood that the drawings are' illustrative only and' show one preferred form of the* torge. In the drawings, F lgure 1 1s a transverse'v vertical sectional view taken through the forge on the line 1 1 of Figure 3, looking in the directionoiithe arrows.

Figure 2, is a diagrammatic yperspective view of the refractory lining blocks showing their relation to each other as they are assembled, the blocks at one end and at the front being removed.

Figure 3, is a top plan view of the forge with the cover removed and the casing in horizontal section, and

Figure 4, is a detail perspective view of the lower central back lining block.

Specication of. Letters Patent.

United Stat-es, apresident particularly to a modifical Patented semi No. 477,221.

Referring' to the drawings, the forge may be mounted. ony a suitable column A and preferably comprises having a fuelyaperture C in the ,lower portion-of the front wall D for the introduction of combusti-ble fuel under pressure through a suitable nozzle E. Th

iii-aya', 1922. J'

a metallic. casing- B C e oil or fuel enters ,v the vinletplpe F controlled by the valve Gr andair under. pressure enters they pipe H controlled by; the val-ve J as usual` in fuel nozzles of this-type.

The cover K is formed with a horizontally extending elongated-aperture K' adapted to be locatedA above the fuel aperture C in vthe, front wall of the casing for the VinsertionI of a plurality of drill `steels L or other articles .to` be `forged.

The cover K 1s provided with a similar aperture P at the back for tion. r

The front lining` portion o-f-the casing comprises the refractory blocks Q through which a lower aperture R is formed registering with the yaperture C for thenozzle E. The base maybe formed of the blocks T and and U of refractory material laid as indicated `in Figure 2A.`

The lower liningblocl a aty the back, as

ythe escape oi products of combusshown, is a special wedge shaped block, the

apex Z) of the wedge lying vertically and opposite the nozzle E. This lower central block a is lpreferably of double thickness from its base to its apex k*and substantially equal in height .to the height' of two back lining` blocks e. The ends` of the' central.

block a are preferably under-cut at c and Z so thatthe narrower standard back lining. blocks e 'Ot' ordinary be built shown particularly yiii-Figure 2. These lining blocks e form the. first and second tiers, and wider, standard lining blocks f complete i the tiers at preferably of.` narrower width, form they sides ot the lining. Bymeans ofthis construction, pocketsiorv recessed chambers are formed at the back` wall ot thecombustion chamber at each side-ot the` center, withv over-hanging raised portions formed by the wider blocks f.

The cover K plurality of blocks h. placed transversely inside the 'top and at the ends of the cover, but leaving the sides of the cover open opposite the apertures 'K and P. l

the back, while similar blocks, ,v

isV preferably lined with a The drill steels L are inserted through the opening K, while the products of combustion escape through the opening l) Some of the products of combustion may escape at the front of the forge through the opening K and a screen (not shown) is usually provided atthe front to protect the workman from the heat and escaping products of combustion.

ln the operation of the forge, the llame is directed against the back blo-'slr a along the line of the arrows 6 in Figures 1 and 2. The remaining arrows indicate that the flame is split or divided at the central `vedged portion of the lower back block ff and ascends in double spirals through the recessed portions at each side of the combustion chamber in order to heat the drill steels. The arrows are also indicated diagrammatically to some extent in Figure 3.

One advantage of this construction resides iu the fact that the flame from one centrally located burner is distributed equally and evenly over a wide surface for the purpose of evenly heating drill steels regardless of the place they occupy in the forge. Another advantage is the ability to heat a plurality of steels at one time, because of the relatively long opening provided at the front of the forge, which is made possible by the lining block construction shown yand described. Furthermore, with the exception of one special. block a at the center, all the lining blocks are of sta-ndard rectangular construction of sizes purchasable upon the market, which cheapens the cost of the forge and permits ready assembling. l am enabled to construct a forge with the requisite shape of the back lining provided with recessed or under-cut lportions forming chambers, by using only one special block.

l claim:

l. An oil burning forge, comprising a casing having a renewable lining composed of blocks of refractory material, the lower central block being wedge shaped and projecting towards the fuel inlet of the forge in order to divide the flame vertically, the remaining blocks being of standard rectangular construction and the conformation of the chamber being adapted to cause the portions of the divided llame to ascend at both sides of the central block: in double spirals for heating the articles to be forged, thereby distributing the heat substantially throughout the whole chamber and retarding the flame to afford substantially complete combustion. Y

2. An oil burning forge, comprising a casing having a fuel aperture in the lower portion of its front wall for the distribution of combustible fuel under pressure, another horizontal elongated aperture above the fuel aperture for the insertion of a plurality of articles to be forged, a waste gas aperture at the back of the structure for the escape of the products of combustion, and a renewable lining for the casing composed of blocks of refractory material, the lower central block being wedge shaped and projecting towards the fuel inlet of the forge. in order to divide the flame vertically, the remaining bloclzs being of standard rectangular construction and the conformation of the chamber being adapted to cause the portions of the divided flame to travel in double ascending spirals for heating the articles to be forged, whereby time is afforded for more complete combustion and the heat is distributed throughout substantially the whole chamber.

ln an oil burning forge, a casing and a renewable lining composed of blocks of refractory material, the lower central block at the bach beingwedge shaped in order to divide the llame vertically, and the remaining back blocks being of standard rectangular construction and built to form concavities at each side of the central wedge shaped block, thereby distributing the heat and causing the divided portions of the flame to ascend in spiral form for heating the articles to be forged.

4. in an oil burning forge, a casing and a renewable lining' composed of blocks of refractory material, the lower central block at. the back being wedge shaped in order to divide the llame vertically, said central block being thicker and higher than the lining` blocks at each side in line therewith, andthe remaining blocks above the central bloclr being of a width substantially equal to that of the central bloclr, thereby forming concavities `in the back wall for distributing the heat and causing the divided portions of the flame to ascend in spiral form for heating the article to be forged.

in testimony whereof I have signed this specification.

CHARLES C. HANSEN. 

